Friday the 13th: a Doomsday Memory

So, as you probably have noticed, today is Friday the 13th. We have three this year, so the superstitious among you better brace themselves: it's going to be a heavy year. I never was superstitious, except maybe when I was a child, and then it was more for fun than anything else. I always had a certain shiver of fear, of playful uncertainty, when it was Friday the 13th. When we were walking back from school, we sometimes walked along the way with a fellow pupil, not a friend but a friend of a friend. He had a wild imagination and had invented a sort of Doomsday calendar for Friday the 13th. He used to say that this particular day was Zombie Day, or Axe Wielding Maniacs Day, or some such things. He started saying whatever horror Apocalyptic things was meant to happen on this specific Friday the 13th we were on. Then he carried on for the rest of the week. It might have sounded scary, but I found it entertaining in its sinister way. So yeah, this is my most vivid childhood memory of Friday the 13th. What is yours?